Unable to Load Maven Metadata for OpenSearch Build Tools

[surekhasangle]

What is the bug?

• When attempting to compile the OpenSearch ml-commons Plugin using gradlew assemble, the build process fails with the following error:
• Unable to load Maven meta-data from https://aws.oss.sonatype.org/content/repositories/snapshots/org/opensearch/gradle/build-tools/2.15.0.0-SNAPSHOT/maven-metadata.xml.
  https://ci.opensearch.org/ci/dbc/snapshots/lucene/org/opensearch/common-utils/2.15.0.0-SNAPSHOT/maven-metadata.xml.
• This error suggests that the required Maven snapshot dependency (org.opensearch.gradle:build-tools:2.15.0.0-SNAPSHOT & common-utils:2.15.0.0-SNAPSHOT) is missing from the repository. The issue is due to the snapshot being removed from the repository.

How can one reproduce the bug?

• Clone the OpenSearch ml-commons Plugin repository.
• Navigate to the project directory.
• Run the command to build the project: ./gradlew assemble
• The build process fails with the Unable to load Maven meta-data error.

What is the expected behavior?

• The gradlew assemble command should successfully resolve all dependencies, download the required build tools, and compile the plugin without errors.

What is your host/environment?

• OS: [Linux, Windows]
• OpenSearch Version: [2.15.0]
• Java Version: [OpenJDK 21]
• Gradle Version: [8.7]
• Plugins Used: ml-commons Plugin
• Build Tool: Gradle

Do you have any additional context?

• Change opensearch version in build.gradle file to 2.15.0 instead of 2.15.0-SNAPSHOT
• Change maven repo to release version instead SNAPSHOT

[dhrubo-os]

@peterzhuamazon do you have any insight on this?

[dhrubo-os]

Related to this issue.

Sonatype has a new process of removing every snapshot that is older than 30 days.
They are not able to restore any older snapshots unfortunately.

Therefore release team created this issue and still in progress.

For the time being the best case is to use non-snapshot for older versions,
as it's not possible to restore 1500 copies of snapshots within short amount of time by re-compile and push.